1.   As chief technology officer at Microsoft, Myhrvold presumably has more pressing research matters than dinosaur tails.

2.   A test of this idea, Myhrvold said, would be to study many more fossils of dinosaur tails to see if the stress scarring was confined to males.

3.   Carpenter questioned whether the bony segments of the dinosaur tails could have produced a supersonice boom.

4.   In their report, Myhrvold and Currie emphasized that only the last two or three inches of the dinosaur tail would have exceeded the speed of sound.